| 摘要 |
PURPOSE:To provide the sintered body which has excellent characteristics, such as high-temp. strength, and is inexpensive by constituting the sintered body of TiC, CaO and mullite and specifying the ratio of the mullite to the TiC and CaO and the grain size of the mullite. CONSTITUTION:This sintered body of the alumina silica system consists of the mullite having 10 to 100mu grain size, the TiC of 5 to 40% by the weight of the mullite and the CaO of 0.1 to 1% by the same weight. The production of the sintered body is executed by using >=2 kinds of refined clay ore, layer alumina, aluminum hydroxide, and silica stone and admixing these materials in such a manner that the compsn. ratio of Al2O3/SiO2 attains a mullite forming range. After the admixed raw materials are ground by a wet process until >=90% attains <=5mu, the TiC of <=50mu grain size is added and mixed to and with the admixed raw materials mentioned above at 5 to 40% and the CaCO3 of <=0.1mu grain size likewise at 0.1 to 1% in terms of CaO. After the mixture is dried and crushed, the mixture is molded by using an org. binder and is calcined for >=1 hours at >=1600 deg.C. |
